Gallery, Projects and General > Project Logs
Popular Mechanics Boiler
awemawson:
--- Quote from: vtsteam on July 31, 2014, 11:21:08 PM ---Thanks Anthony, I looked it up and it only seems available from the manufacturer with a $66 minimum quantity. :(
I also found this non Teflon stuff which seems pretty good in the specs:
http://www.gsasupplyco.com/gasntnonsofs.html.
Andrew -- is "whiting" white lead in linseed oil? I actually have some of that as an old unopened tub of traditional gesso.
ps. some forms of hemp are also banned here.....
--- End quote ---
Steve, I think others have answered this before I got to it !
The chap I bought my last house from 32 years ago was the heating and ventilating contractor who installed the plumbing in Terminal 3 Heathrow. He swore by just using oil based gloss paint on screwed joints, which seems to work. Mind you looking at the state of the house plumbing when we bought it I shudder to think what the airport terminal pipes are like :ddb:
He got his come uppence though - BOTH his wives turned up at his funeral, and oh was there a fuss :clap:
vtsteam:
Thanks guys, I should have looked up whiting. Oakum/hemp I'm familiar with.
My father in law once brought me a full gallon of raw linseed oil he didn't want any more -- looks like it's from the 50's judging by the label. I've used boiled linseed oil before because it air dries easily, but not raw, so I've had no particular use for it either.
But maybe now, to make up a once a year removable traditional putty it might be just the thing. I'm wondering however -- whiting -- I haven't seen it anywhere in the local hardware stores as such, but we do have something which might be the same thing -- plumbers putty -- oil based chalky and smelling of linseed oil, and also very similar, window glazing compound -- white chalky, linseed oil-ish smelling, and supposedly non drying.
Last night I ordered some of the Gasoila non-teflon pipe compound, since I found it for $5 plus change on Amazon in a small quantity. The specs say good for potable systems, NFS approved, and good to 400F. But, still, whatever is in it is unknown and it's reaction to high temps above that also unknown, while whiting and oakum are very well known ingredients, and non toxic no matter what the temp.
You know Andrew I came across the paint as joint compound recommendation elsewhere in old writings re. model engineering. I was tempted by that, too.
so many choices.......
vtsteam:
With most of the other problems solved, it's back to the relief valve today. I decided to do an outside barrel ball and spring type, but to use as much ready-made brass plumbing as I could, to keep with the overall theme -- which turned out to be quite easy.
First I turned a bit of brass to the ID of a 1/8" brass pipe nipple:
vtsteam:
Checking fit:
vtsteam:
Drilled to 1/8" for the steam passage:
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